1. M. A. Armstrong, Groups and Symmetry, Springer-Verlag, New York, Inc., New York, 1988.
2. Sets of typical subsamples
3. Using Subsample Values as Typical Values
4. F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, North-Holland, New York, 1978.
5. J. S. Rose, A Course on Group Theory, Cambridge University Press, New York, 1978.